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Add half-texel margin to SDF around the mesh

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This commit is contained in:
Wojtek Figat
2024-05-29 18:45:32 +02:00
parent f1debd6cb5
commit 4dd331d546
1 changed files with 4 additions and 1 deletions
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5
Source/Engine/Tools/ModelTool/ModelTool.cpp
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@@ -364,9 +364,12 @@ bool ModelTool::GenerateModelSDF(Model* inputModel, ModelData* modelData, float
bounds = modelData->LODs[lodIndex].GetBox();
else
return true;
Float3 size = bounds.GetSize();
ModelBase::SDFData sdf;
sdf.WorldUnitsPerVoxel = METERS_TO_UNITS(0.1f) / Math::Max(resolutionScale, 0.0001f); // 1 voxel per 10 centimeters
const float boundsMargin = sdf.WorldUnitsPerVoxel * 0.5f; // Add half-texel margin around the mesh
bounds.Minimum -= boundsMargin;
bounds.Maximum += boundsMargin;
const Float3 size = bounds.GetSize();
Int3 resolution(Float3::Ceil(Float3::Clamp(size / sdf.WorldUnitsPerVoxel, 4, 256)));
Float3 uvwToLocalMul = size;
Float3 uvwToLocalAdd = bounds.Minimum;